/Engine/Plugins/Online/OnlineSubsystem/Source/Public/Interfaces/OnlinePartyInterface.h
Attempt to rejoin a former party
true if task was started
bool RejoinParty ( const [FUniqueNetId](API\Runtime\CoreOnline\Online\FUniqueNetId) & LocalUserId, const [FOnlinePartyId](API\Plugins\OnlineSubsystem\FOnlinePartyId) & PartyId, const [FOnlinePartyTypeId](API\Plugins\OnlineSubsystem\FOnlinePartyTypeId) & PartyTypeId, const [TArray](API\Runtime\Core\Containers\TArray)< FUniqueNetIdRef > & FormerMembers, const [FOnJoinPartyComplete](API\Plugins\OnlineSubsystem\Interfaces\FOnJoinPartyComplete) & Delegate )